Gas-burner.



EIAYTENTBD JULY 7, 1903.

2 SHEETS-SHEET l.

NO MODEL` W/ TNESSE S.'

A TTOHNE Y YH: Nonms versus co. wom-uws, wAsmNm'oN, D, c.

PATENTBD JULY '7, 1903.

B. COLUMBUS.

GAS BURNER.

APPLICATION IILEDJUNB 1a, 1902.

2 SHEETS-SHEET 2.

N0 MODEL.

W/ TNESSES.' Mmww UNiTED STATES Patented July 7, 1903. i

PATENT OFFICE.

BERNHARD CGLUMBUS, NEW YORK, N. Y.

SEECIFICATION forming part of Letters Patent No. 733,160, dated July 7,1903.

Application filed June 18, 1962x Serial No. 112,205. (No model.)

To @ZZ whom, t may concern:

Be it known that I, BERNHARD COLUMBUS, a citizen of the United States,and a resident of the city of New York, borough of Manhattan, in thecounty and State of New York,v

have invented new and useful Improvements in GasBurners, of which thefollowing is a full, clear, and exact description.

The invention relates to incandescent gasburners of the Bunsen type; andthe object of the invention is to provide a new and improved gas-burnerwhich is simple and durable in construction and arranged to insure aperfect mixture ot the air and gas, to allow ot' regulating the amountof gas to the minutest degree, and to permit ot maintaining apilot-flame of a mixture of air and gas whenever the valve-plug isturned into a closed position.

The invention consists of novel features and parts and combinations ofthe same, as will be more fully described hereinafter and then pointedout in the claim.

A practical embodiment of the invention, is represented in theaccompanying drawings, forming a part of this specification, in whichsimilar characters of reference indicate corresponding parts in all theviews.

Figure l is a sectional side elevation of the improvement. Fig. 2 is anenlarged sectional side elevation of the mixing-chamber and gassupply.same on the line 3 3 of Fig. 2, showing the valve-plug in an openposition. Fig. e is a like view of the same, showing the valve-plug in aclosed position; and Fig. 5 is a perspective view of the valve-plug.

The'valve-body A of the gas-burner'is connected at one end with thegas-supply pipe B and carries at its other end an integral nozzle C,discharging the gas in a fine jet into a preliminary mixing-chamber D,having airinlets D', surrounding the nozzle C. The lower end ofthemixing-chamber D screws on the body A, and on the said chamber D, nearthe upper end thereof, is formed an external collar D2, on which reststhe lower end of the shank E' of an enlarged final mixing and heatingchamber E, provided in its top with a screen E2, opening into a mantleE3, hung at its upper end on a supporting-rod E4, vertically movable ina socket E5 and adaptgradually-open, or closed position.

Fig. 3 is a transverse section ot the;

button E9 is secured in the center of the screen E2 to distribute themixture of gas and air equally to the meshes of the screen.

The plug F in the valve-bodyA is provided with a diametrical aperture F'and With a peripheral feed-groove F2, intersecting the ends of theaperture F', as plainly illustrated in the drawings. The plug F isprovided with a suitable handle F3, adapted to be turned by the operatorto turn the plug into an open, When the plug is in a full-open position,(see Figs. 2 and 3,) then the gas under pressure from the supply-pipe Bpasses in a jet out of the nozzle into the preliminary mixing-chamber D,and thus draws air into the inlets D', and this air mixes with the gasin the said chamber and nally passes into the nal mixing-chamber andthrough the screen E2 to burn on the top thereof within the mantle E5 torender the latter incandescent.

The middle portion of thepreliminary mixing-chamber D is made in theshape of two frustums of cones united at their apex ends,

so that the air and gas are rst compressed and then allowed to expand toinsure an intimate mixture of the air and gas. By reterence to thedrawings it will be seen that the side of the nozzle C' is tapering, andthe nozzle extends about the height of the inlets D' to insure a fullflow or rush of air into the chamber D when the jet of gas issues fromthe nozzle.

When the valve-plug F is turned into a closed position by the operatormanipulating the handle F3 correspondingly, (see Fig. 4,) then gas canpass from the supply-pipe B through the groove F2 to the nozzle C, andthis gas forms a mixture with the air entering the inlets D', so that apilot-flame remains burning in the mantle above the screen E2 at thetime the plug F is in a closed position.

Itis understood that the peripheral groove F2 is comparatively small, sothat only a very small quantity of gas can pass from the supply-pipe Bto the nozzle C at the time the plug F is in a closed position, as shownin Fig. 3.

IOO

Having thus described my invention, I claim as new and desire to secureby Letters Patent- An incandescent lamp-burner, comprising a Valve-bodyhaving a plug and an integral nozzle; a preliminary mixingchamberremovably secured on the valve-body and having its middle portionsformed of two frustums of a cone united at their apex ends; saidpreliminary mixing-chamber having vertical air-inlets at its lower endopposite said nozzle, said inlets extending upwardly even with the topof the nozzle; the upper portion of said preliminary chamber having ,anexternal collar at the termination of its conical portion; a finalmixing and heating chamber having an enlarged upper portion and a lowerportion adapted to telescope snugly over the upper section of theprimary mixing-chamber and rest upon the external collar thereof, themiddle portion of said Iinal mixing-chamber being gradually reduced ortapered from the enlarged portion to merge into the parallel wallsforming the lower portion; the top of said primary mixing-chamberterminating in the lower portion of said nal mixingchamber below thelower end of the tapered section; a chimney and mantle support carriedupon the lower end of said final mixing and heating chamber and a screenon top of said chamber; and a conical button in the center of saidscreen with its lower end extending downwardly into the chamber, asspecified and for the purpose set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

BERNHARD COLUMBUS.

Witnesses:

JOSEPH H. FARGIs, RICHARD V. ROCA.

